why would you 'control your emotions' in the first place? What's wrong with expressing your emotions?
Swearing can help you let some steam out in stressful situations, or get your point across more clearly (eg 'fuck you and your opinion!')
The problem starts when people use swearwords just for the shock value of it - not to express their feelings, but to induce them in you

you've protected my sorry ass with bombs and grand scale corruption, so thank you very much in the name of the rest of the world.. look in your own backyard from now on, and maybe we'll all live a better life. hypocrites

yes, fuck him and his wireless transfer of electricity he invented in ~1890, in a world without a telephone and cars! he dared to dream about free energy in a time black people were still lynched.. bah

Fuck you and your cartoonish american protests! You can only blame yourself! Can't you see there's something wrong with you people when police beat your fellow man, and your first instinct is to grab a camera and take pictures? You claim you want to change your society, but you first need to develop one - now you are just some people that happen to live on the same territory.

Learn from protests around the world. You all look so cute singing and dancing, but when shit hits the fan all of you disperse and leave lying people on the mercy of the police! And you want to change your government, one of the biggest mechanisms in the world, with this attitude?

Take it from someone who inhaled enough tear gas to cry for a year - nobody will take you seriously if you yourself won't. Take a stand. Protect each other. Quit being pussies.

geeky I've seen.. a lot. but skeptical, questioning base? people on this site just wait to jump on your dick and jerk it of, and that's encouraged by the karma pts system.. reddit is a lot of things, but skeptical is not one of them